Swivel-loom.



M. SEMOFP.

SWIVEL LOOM.

APPLIOIATION FILED SEPT. 23, 1910.

1,030,928, Patented July 2, 1912.

2 SHBETS-SHEET 1.

by W

COLUMBIA PMNDGRAPH CO'IWASHXNGTON. D c.

MEYER SEMOFF, or NEW YORK, N. Y.

SWIVEL-LOOM.

Specification of Lette'rs Patent.

Patented July 2, 1912.

Application filed September 23,1910. Serial Nix-583 350.

To all'whom it may concern:

Be it known that I, MEYER Smrorr, a citizen of the United States,residing at the borough of the Bronx, in the city and county of New Yorkand State of New York, haveinvented certain new and useful Improvementsin Swivel-Looms, of which the following is aspecification, referencebeinghad therein. to the accompanying-drawings forming part thereof.

My invention relates to swivel looms in which, in addition totheordinary fly shuttle for weaving the body of the fabric, circularshuttles or other devices are used to weave spots or small figures onthe face of the fabric, according to thedesiretldesign.

My invention has for its object to provide means for automaticallystopping looms of the class described whenever there is any irregularityof-movement of the swivel shuttle rail due to the failure of the patternmechanism or other actuating-means to operate properly, as a result-ofwhich the warp threads not intheir proper positions for the weavingoperation of the swivel shuttles, will be caught therebyand damaged.

My invention has for'its ob]ect to provide means for automaticallystopping the loom to prevent the smash up of the threads when they arenot located in their proper positions with respect to the swivelshuttles.

My invention has for its object, in addition to the abovepto:providemeans for'automatically stopping the loom whenever the swivel shuttlesfail to act properly and re main in the shed.

My invention also has for its ob ect to provide means for automaticallystopping the loom during either the forward or'backward movement ofthelay.

My invention also'has for its object, simplicity and economy ofconstruction, ease and reliability of operation, and adaptability forattachment to the'ordinary loom.

My invention has other objects which will appear more fully hereinafter.

I shall now describe the embodiment of my invention illustrated in theaccompanying drawings and W111 thereafter point out my invention inclaims.

Figure 1 is a front elevation of'a detached portion of the swivelshuttle rail and swivels carried thereby, the rail being partly brokenaway to show the internal mechanism thereof. :Fig. 2 isH'SldQQlBVitlLlOlTOf the same in sectlon. Fig. 3 1s a diagram maticoutline of the circuits controlling the stopping mechanism of theillustrated embodiment of my invention. Fig. 4 is a side elevation of aloom withthe improvements thereon embodying my invention. Fig. 5 is aplan view of the blades and buffer operating the stopping mechanism andthe controlling means therefor. Fig. 6 is an-end elevation of the bladecontrolling magnet.

In Fig. l is shown an ordinary loom'u'pon the frame l'of which ismounted the breast beam 2, the lay 3carriedby the lay "swords 4,-andother parts wellunderstood by'those skilled in the art. The shuttle rail5 is slidably fitted on the lay 3 and permitted to he raised "andlowered thereon at times predetermined by the action of the patternITIGOlltUfllSlllOpeFatil'lg through suitable cams levers and springs notshown. The shuttle rail is provided with a seriesof swivel shuttles '6of circular form which are locatedalong'therail at fixed distances apartand adapted in their movement to bridge the recesses 7p1-ovidedalongthelower portion ofthe rail. The shuttles 6 are shown as'operatedthrougha reciprocating rack 8,

pinions 9 and horse-shoe shaped gears '10, carried by the shuttle rail5. The mechanism forgiving the lateral reciprocating movement to therail may be/of any well known manner of construction and operation andis therefore not shown. The rack drives 'all the shuttlesinperfectunison with each other. Themechanism for raising and loweringthe shuttle-rail 5 and for laterally moving it to the right-and left mayalso be ofany of the well known'types of construction and operation andare therefore not shown in the accompanying drawings and thereforeneed'not'be described at length.

The swivel shuttles normally -'lie in their positions at'the top of therecesses 7 leaving the latter unrestricted for the passage therethroughof the warp threads lifted by the pattern mechanism in the formationofthe figure or spot. As the shuttles perform their rotational movementthey pass beneath the lifted warp threads and above the lower warpthreads. The number of threads in each series of threads passing withinany one of said recesses '7 is always equal in number to those passingthrough the other recesses along the shuttle rail. The relative positionof each thread in each series is in allcases the same so that inthe=event ofan irre ularit in the movement-of the y a: y

, energized operates to attract the arm 22 of shuttle rail, the samerelative threads in each series will fail to clear the blocks 11 betweenthe recesses 7 and be prevented from passing up and within thoserecesses. A smash up results from the engagement of the quick movingshuttles 6 with the improperly positioned warp threads. To prevent thesmash up, with the consequent labor of reuniting the threads andrepairing the dam age done, and insure the stoppage of' the loom in theevent of the warp threads failing to clear the blocks 11 along the baseof the rail is one of the principal objects of my invention. 7

In the illustrated embodiment of my invention, I provide along the loweredge of one of the blocks 11 a movable contact, preferably a flat spring12 which extends the length of the block 11 and which ismoved intocontact with an L-shaped plate 13 mounted on the rear face of theshuttle rail and above the spring 12. The plate is adjustable to varythe distance between it and the flat spring, the adjustment screw 14 accomplishing this purpose. The warp threads which fail to pass within therecesses 7 when lifted by the pattern mechanism will engage the flatspring 12 as the shuttle rail is lowered. The spring will be moved intocontact with the plate 13 and close an electrical circuit to operate anelectromagnet 20. In Fig. 3, the circuit which is thus called into playis traced as follows: from battery 15, wire 16, electromagnet 17, wire18, contacts 12 and 13, wire 19, electromagnet 20, and wire 21 to thebattery. The electromagnet 20 is mounted on the lay sword 4 and when thebell crank lever the engaging end 23 of which falls into one of thenotches in the the electromagnet and stopping mechanism operates to stopthe loom immediately.

It is obvious that in case the swivel shuttle 6 is held within the shedand prevented from moving out of its position at the lower end of therecess 7 for some reason or other,

i vented, however by stopping the loom before any damage can take place.To illustrate, with the shuttlesv 6 atthe lower end of the recesses 7the contacts 27 and 28 will be in engagement with each other. As soon asthe bat-ten 3 has advanced one fourth of its forward movement and thespring contact or key e1 engages the stationary contact 42, anelectrical circuit is closed thereby energizing an electromagnet tooperate the automatic stop mechanism hereinafter described. In Fig. 3this circuit may be traced as follows: from battery 15, wire16,electromagnet 17, wire 18, contacts 11, 42, contacts 27, 28, wire 29,wire 19, electromagnet 20, and wire 21 back to the battery. 111 theillustrated embodiment, the electromagnet 17, is mounted on the batten 3near its longitudinal center. It operates to attract the lever 39 andcause the stop pin carried thereon to drop into the V-shaped recessprovided at the end of the blade 31 to prevent the latter from swingingon its pivot to clear the frog or buffer 32. The buffer is mounted onthe frame beneath thebreast beam 2, and engages the projection 52 on theshaft 51 to rotate the latter and operate the belt shifting'and brakemechanisms well understood by those familiar with this art.

It is obvious that while the shuttles are acting'properly there will beno closing of the circuit as the lay moves forward and a closing of thecontacts a1 and 42 effected, for the reason that the circuits willstill'remain open at thecontacts27 and 28. lVith the shuttles actingproperly, the contacts 27 and 28 will be closed during the period whenthe lay is at the end of its movement backward. The circuit, however,will still remain open by reason of the fact that the contacts 41 and 42are not brought intogengagement with each other until the lay hascompleted one fourth of its forward movement.

The impact blade 31 is controlled by the swivel shuttles and is shown aspivotally mounted on a plate 30 carried on the batten 3 directly overthe fly shuttle blade 33. The swivel shuttle blade 31 is provided with adepending portion which hangs over the edge of the fly shuttle blade andvery close thereto. With the forward movement of the lay 3, thedepending portion engages the buffer 32'to stop the operation of theloom.

The blade 33 assists in bearing'the brunt of the shock of the impact ofthe blade 31 against the buffer. In order that the blade 31 may clearthe buffer 32, in" a manner similar to that provided in the ordinaryloom when the fly shuttle alone is used, so as to keep the loom inconstant operation and avoid the stopping thereof with each forwardmovement, the blade 31 is'conne'cted to the shuttle rail 5 by means ofthe chain 35 operating around a series of pulleys 36 and connected tothe shuttle rail actuating rod 37. As the rail moves upwardly the bladeis caused to swing upon its pivot against the resistance of the returnspring 38 and made to move part way toward the batten 3 This swingingmovement is prevented, when necessary, by the energization of theelectromagnet 17 and the interference produced by the stop pin carriedon lever 39 controlled by the electromagnet, results in the engagementof the blade with the butter 32 as the lay moves forward and approachesthe breast beam. This engagement results in the immediate stopping ofthe loom. The frog or bufler 32 is of a well known form of constructionand in the present embodiment isjarranged to be engaged by the blade 33controlled by the fly shuttle whenever the shut tle is absent from orfails to reach its proper box. The blade 31 controlled by and operablein connection with the swivel shuttles to engage the buffer 32, islocated above the fly shuttle blade 33, being provided with a downwardlyextending part which is ar ranged to engage the buffer 32 with theforward movement of the lay.

I shall now describe the operation of the swivel 100111 in Weaving thesmall detached figures or spots on the fabric being woven by theordinary fly shuttle.

Vith the fly shuttle out of operation, the swivel shuttle rail 5 isready to be lowered. As the lay moves rearwardly and the warp threadsare raised to form the shed, the shuttle rail 5 is moved transversely orlaterally to bring the swivel shuttles (3 and the recesses 7 in theproper position relative to the threads. The mechanism for moving theshuttle rail transversely is not shown but it may consist of anysuitable construction and be operated in the manner well understood bythose familiar with the art. hen the lay 3 has practically coveredtwothirds of its rearward movement theshuttle rail will have reached itslowermost position. The swivel shuttles 6 carrying their threads nowmake their rapid movement be tween the warp threads forming the shed andafter completing this weaving operation return to their positions at theupper end of the recess. hen the lay has reached the end of its rearwardmovement it begins its forward movement. The shuttle rail now rises andreaches its highest posit-ion when the lay has practically finished itsforward movement. It is thus out of the way for the operation of the flyshuttle should the pattern call for the long cross threads of thelatter. As the lay moves forward and the shuttle rail upward, the blade31 actuated by the chain 35 attached to the shuttle rail actuating rod37 is swung on its pivot to clear the buffer 32 and avoid stopping theloom.

It sometimes happens that through some irregularity in the lateralmovement of the shuttle rail 5, due to the failure of its operatingmechanism to work properly, the recesses 7 are not brought in properalinement with respect to the warp threads lifted by the patternmechanism. As the shuttle rail is lowered, the threads which cannotenter and pass within the recess 7 engage the flat spring contact 12 andlift it up against the plate 13 thereby closing the circuit whichenergizes the electromagnet 20. The pawl 23 is caused to immediatelyengage the ratchet bar to effect the almost instantaneous stoppage ofthe loom before the lay has made any material movement rearwardly. Thestopping of the loom permits the weaver to correct the irregularity ofmovement of the rail. If, however, for some reason or other the pawl andratchet bar mechanism fails to operate to effect the stoppage of theloom and a smash up of one series of warp threads follows from themovement of the rail or swivel shuttles, further damage is prevented bythe stopping of the lay during its forward movement by the engagement ofthe blade 3l with the buffer 32 to stop the loom in the mannerheretofore described. The electromagnet 17 having been also energized,the stop pin 39 falls into its slot as soon as the blade has reached theend of its return movement and prevents the latter from again swingingto clear the buffer with the forward movementof the lay.

It happens sometimes that the swivel shuttle stops for some reason orother in its lowermost position and at the lower end of the recess. Thereciprocating rack 8 may fail to complete its movement to bring theshuttle back to its normal position at the upper end of the recess. Inthis event the contacts 27 and 28, mounted respectively on thereciprocating rack 8 and the inclosing casing 5 of the rail 5, willremain in engagement with each other instead of moving out of engagementwith each other with the movement of the shuttle to its normal position;and as the lay 3 moves forward the key -1t1 l2 isclosed, thereby closingthe circuit and energizing the magnet 17 to prevent the swingingmovement of the blade 31 to clear and effecting the stoppage of the loomas heretofore described. The contact 28 on the rack 8 is of a lengthequal to six of the eight teeth of the pinion9 and is so positionedrelative to the spring contact button 27 carried by the casing 5 that itwill be out of contact therewith only when the swivel shuttle is out ofthe shed in its proper position of rest at the top of the recess 7. henso positioned, as heretofore pointed out, there will be no closing ofthe circuit at this point so that the circuit Will remain open eventhough the key 41, 42 be closed with the movement of the lay inproximity to the breast beam.

It is obvious that various modifications may be made in the constructionand arrangements of parts shown and described a smash protectorcomprising a part pivotj ally mounted on the lay and carried thereon andin the path of the loom stopping mechanism and adapted to engage andactuate said mechanism to stop the loom, means operatively connectedwith the shuttle rail and with said pivoted part to swing said part onits pivot and out of the path of said mechanism, and an electricallycontrolled part adapted to engage said pivoted part and preventits.swinging movement to clear said mechanism whereby to stop the loom,said electrically controlled part being operative in the event of anyirregularity in the movement of the shuttle rail.

2. In a swivel loom, the combination with the loom stopping mechanism,the batten and the movable shuttle rail, of a smash protector comprisinga pivoted part carried on the batten and movable therewith in the pathof the loom stopping mechanism and adapted to engage said mechanism tostop the loom, means operatively connecting the shuttle 'rail with saidpivoted part to swing said part out of the path of the loom stoppingmechanism, a stop carried by the batten and adapted to engage saidpivoted part and prevent its swinging movement to clear the loomstopping mechanism, and an electrical device carried by the shuttle railand adapted to control said stop and effect its operation in the eventof any irregularity in the movement of the shuttle rail to cause theengagement of the pivoted part with the loom stopping mechanism to stopthe loom. v

3. In a swivel loom in combination with a loom stopping mechanism, ofengaging means arranged to move in the path of said mechan sm and engagethe same to eflect the stoppage of the loom, means normally operablewith the movement of the loom to move said engaging means out of thepath of said mechanism, actuating means carried by the lay and operablewith the backward movement of the loom to engage and oper-' ate the loomstopping mechanism, and electrically controlled means for operating saidactuating means during the backward movement of the loom and foroperating to prevent the movement of the engaging means out of the pathof the mechanism during the forward movement of the loom, whereby toeffect the stoppage ofthe loom during either the forward or backwardmovement of the loom.

V 4. In a-swivel loom, the combination with the loom stopplng mechanism,the lay and the movable shuttle rail, of a smash protector comprising apivoted part carried by i the lay and movable therewith in the path j ofthe loom stopping mechanism and adapted to engage said mechanism to stopthe iloom, means operatively connecting the shuttles and shuttle milwith said pivoted part i'lOOHl stopping mechanism, a stop electricallycontrolled and carried by the lay and adapted to engage saidpivoted'part to prevent its swinging movement to clear the loomEstopping mechanism, and an electrical de- Zvice carried by theshuttlerail and opera- ;tive in the event of any irregularity in theZmovement of the shuttles or shuttle rail to Zefl'ect the engagement ofthe stop with the pivoted part whereby said pivoted part will :engagethe loom stopping mechanism to stop the loom.

5. In a swivel loom, the combination with the loom stopping mechanism,the lay and ithe movable shuttle rail, of a smash protector comprising apivoted blade carried by the lay and movable therewith in the path ofthe buffer of the loom stopping mechanism and adapted to engage-saidbuffer to actuate said mechanism to stop the loom, means operativelyconnecting the shuttle rail with said blade and adapted to swing saidblade out ofthe path of said buffer, a stop electrically controlled andcarried by the lay and adapted to engage said blade to pref vent itsswinging movement to clear the buffer of the loom stopping mechanism,and an electrical device carried by the shuttle rail and operative inthe event of any irregularity in the movement of the shuttle rail toeffect the engagement of the stop with the blade whereby said blade willbe prevented from clearing said buffer and will engage the buffer tostop theloom.

6. In a swivel loom, the combination, with a lay, a shuttle rail andswivel shuttles movably carried thereon, and a loom-stopping mechanism,of an electric circuit, a closing device for said circuit carried by therail and adapted to close said circuit in case there is any irregularityof movement of the shuttle rail, means for opening said circuit, andmeans controlled by said circuit closing device for actuating theloom-stopping mechanism whereby to effect the stoppage of the loom.

7. In a swivel loom, the combination, with a lay, a shuttle rail andswivel shuttles movably carried thereon, and a loom-stopping mechanism,of an electric circuit, a closing device for said circuit carried by therail and adapted to close said circuit in case there is any irregularityof movement of the shuttle rail, and normally open with the regularmovement of the shuttle rail and means carto swing said part out ofthepath of the ried by the lay and controlled by said circuit closingdevice and operable with the backward movement of the lay to actuate theloom-stopping mechanism whereby to efliect device for said circuitcarried by the rail' and adapted to close said circuit in case there isany irregularity of movement of the rail, means for opening the circuitof said device during the normal and regular operation of said rail,means carried by the lay and adapted to actuate said mechanism with thebackward movement of the lay, and a second circuit closing devicecarried by the rail and arranged to be closed in case there is anyirregularity of movement of the rail whereby to effect the stoppage ofthe loom during either the forward or backward movement of the lay.

9. In a swivel loom, the combination with the loom stopping mechanism,the lay and the movable shuttle rail, of swivel shuttles carried by theshuttle rail and movable thereon across the recesses of the shuttle railand normally held at the top of the recesses during their non-operationso as to leave said recesses open for the passage of the warp threads,an electrical circuit and a circuit closing device carried by theshuttle rail and adapted to be closed when said shuttles are not intheir normal positions and a second circuit closing device adapted tocoact with the first closing device and carried by the lay to close saidcircuit, and means controlled by said circuit closing devices jointlyand adapted to actuate said loom stopping mechanism to stop-the loom.

10. In a swivel loom, the combination with the loom stopping mechanism,the lay and the movable shuttle rail provided with recesses for thepassage of the warp threads, of swivel shuttles carried by the shuttlerail and movable across said recesses and held at the top ofsaid.recesses when they are not performing the weaving operation so as toleave said recesses open'for the passage of the warp threads, anelectrical circuit, two circuit closing devices adapted to coact witheach other to close said circuit, one of said devices being carried bythe shuttle rail and the other by the lay, said devices being adapted toclose said circuit during the forward movement of the lay in the eventof any irregularity v in the movement of the swivel shuttles and theirfailure to return to their normal positions at the top of said recesses,a part carried by the lay in the path of the loom stopping mechanism andadapted to engage said mechanism to stop the loom, means operativelyconnected with the shuttle rail operating means and said part to swingsaid part out of the path of said loom stopping mechanism, and a partcontrolled by said electrical circuit and operable thereby to engage thefirst mentioned part and prevent its swinging movement to clear saidmechanism and whereby to stop the loom.

In testimony whereof I have affixed my signature in the presence of twowitnesses.

MEYER SEMOFF.

\Vitnesses:

BERNARD COWEN, MAURICE B. RIcH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

